Pictures and photos will make the house look terrible when they are nailed too many on the wall, there will be no place to put your flowers because it will fill the living room table if you put them on it, you will have to put your books where you have to go and get it in different room since the books are put on the big shelves that do not fit with your living room. This kind of things can be solved if you can be creatively use your unused or at least unique efficient furniture as functional decoration. As an example, you can Ladder design for small home. What to do with the ladder? Architecture.